20813041 has 2 divisors, whose sum is σ = 20813042. Its totient is φ = 20813040.

The previous prime is 20813033. The next prime is 20813063. The reversal of 20813041 is 14031802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 9790641 = 3320^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 20813041 - 2³ = 20813033 is a prime.

It is not a weakly prime, because it can be changed into another prime (20813021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10406520 + 10406521.

It is an arithmetic number, because the mean of its divisors is an integer number (10406521).

Almost surely, 2^20813041 is an apocalyptic number.

It is an amenable number.

20813041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20813041 is an equidigital number, since it uses as much as digits as its factorization.

20813041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 20813041 is about 4562.1311905731. The cubic root of 20813041 is about 275.0712366415.

Adding to 20813041 its reverse (14031802), we get a palindrome (34844843).

The spelling of 20813041 in words is "twenty million, eight hundred thirteen thousand, forty-one".